Voting in the London mayoral election but having difficulty choosing a candidate? Mix and match Conservative, Labour, Lib Dem and Green policies to form your own composite mayor – and maybe see who that is closest to on the ballot paper

As Boris Johnson is criticised as having done 'virtually nothing' to tackle rising youth violence, join guests Hackney heroine Pauline Pearce, Leon Fearon, who took Johnson to task over the riots, Tim Newburn of the LSE and Matt Cavanagh of the IPPR to debate policing in the capital